Search found 7216 matches

by admin
Fri Sep 24, 2021 7:44 pm
Forum: Bug Reports
Topic: Flats w/Bias Frames Issue
Replies: 3
Views: 63

Re: Flats w/Bias Frames Issue

Hi Don,

it's an issue when the camera is in still mode as far as I can tell - I think I have a fix now, but I have had to change more code than I would normally want to, so a lot of checking to do to make sure I don't break something else!

cheers,

Robin
by admin
Fri Sep 24, 2021 6:34 pm
Forum: Other Astro Imaging
Topic: Is this in focus?
Replies: 2
Views: 57

Re: Is this in focus?

Hi, all sky cameras can be tricky to focus - if you are using a glass/plastic dome then the curvature means that it introduces some errors to the focus, so the image can look sharply in focus with the dome off and then be a bit blurry with the dome on. It may not be a case of 'is this in focus'?, bu...
by admin
Fri Sep 24, 2021 6:28 pm
Forum: General Discussions
Topic: Platesolving with SharpCap.
Replies: 3
Views: 134

Re: Platesolving with SharpCap.

Hi,

the test button is new in SharpCap 4.0 - time for a quick upgrade ;)

cheers,

Robin
by admin
Fri Sep 24, 2021 5:49 pm
Forum: How do I?
Topic: Questions on best use of Sensor Analysis
Replies: 5
Views: 88

Re: Questions on best use of Sensor Analysis

Hi Dan, you have to show the brain window and then do one of the following * Press the 'measure' button to let SharpCap measure the sky background brightness of * Enter a sky background brightness manually - perhaps because you have previously measured a few times and you know that it is always abou...
by admin
Thu Sep 23, 2021 9:36 pm
Forum: How do I?
Topic: Questions on best use of Sensor Analysis
Replies: 5
Views: 88

Re: Questions on best use of Sensor Analysis

Hi Dan, the answer to your question (and the shape of the graph in the brain window) depends on the following * how bright is your sky background as seen by the camera - this depends on light pollution levels, filters, pixel size and scope f-ratio * how much read noise does your camera have. Optimum...
by admin
Thu Sep 23, 2021 9:28 pm
Forum: General Discussions
Topic: how to get rid of GRID pattern on images ?
Replies: 1
Views: 46

Re: how to get rid of GRID pattern on images ?

Hi, the Jupiter ones (with colour) just look like noise - stacking more frames or capturing at a lower gain (providing this does not push the exposure too long) can both help. The Saturn image looks like you have not debayered the RAW source video (no colour and a grid/chessboard pattern). Check the...
by admin
Thu Sep 23, 2021 9:25 pm
Forum: Bug Reports
Topic: Trying to do sensor analisis QHY10-C
Replies: 1
Views: 37

Re: Trying to do sensor analisis QHY10-C

Hi, I'm sorry to say that as far as I can tell the latest SDK updates from QHY do not support their 'classic' series of cameras like the 10C very well. From your logs I can see that the SDK is giving errors when starting exposures, either straight away when starting the camera or after a few frames....
by admin
Thu Sep 23, 2021 9:16 pm
Forum: How do I?
Topic: Polar align plus GOTO
Replies: 2
Views: 46

Re: Polar align plus GOTO

Hi,

yes, although if you have got your polar alignment spot on and have also eliminated any cone error then even a 1 star align should be remarkably accurate ;)

cheers,

Robin
by admin
Thu Sep 23, 2021 9:15 pm
Forum: How do I?
Topic: Help needed for polar alignment please
Replies: 1
Views: 44

Re: Help needed for polar alignment please

Hi, depending on your initial pointing and how well/badly the guide scope is lined up with the mount axis, the field of view can change quite a bit when you rotate through 90 degrees. It might be that you just end up in an area of sky that is poor in stars by bad luck. It's even possible that the ro...
by admin
Thu Sep 23, 2021 9:09 pm
Forum: General Discussions
Topic: Auto focusing using multiple stars
Replies: 3
Views: 75

Re: Auto focusing using multiple stars

Hi, I guess to give a sense of scale to this, how many steps does it take for your focuser to go from clearly out of focus one side, through focus to clearly out of focus the other side? Your scan will do a total of 800 steps (50 x 16). If running through focus from one side to the other is 5000 ste...